Method for controlling air quality adjustment, method for controlling ventilation air flow and ventilation air flow controlling system

摘要

Provided are techniques regarding air quality adjustment and control that enable an amount of energy consumed in substantially closed environment such as manufacturing environment and air quality in the environment to be concurrently optimized. A control unit 30 associates a predetermined air flow of a fan filter unit (FFU) 22 with an operating state of a manufacturing apparatus 26 placed in a manufacturing environment. A current operating state of the manufacturing apparatus 26 is detected by a power sensor 12 and an air flow sensor 14. The control unit 30 switches ventilation air flow of the FFU 22 to the predetermined air flow preliminary associated with the detected operating state. The predetermined air flow is determined based on a relationship between the ventilation air flow for achieving target air cleanliness in the operating state of the manufacturing apparatus 26 and power consumption of the FFU 22 during the operation of the FFU with the ventilation air flow.